- Split backend/app/core into weather/, discord/, memory_kb/, search/
subpackages by responsibility, keeping config.py and llm.py as the
shared foundation; updated all import sites accordingly.
- Add local Markdown knowledge base support (local_knowledge.py,
knowledge_base/fgo.md, LOCAL_KB_* settings) that embeds and injects
relevant docs into the system prompt by topic similarity.
- Add ruff and pyright as backend dev dependencies with basic config
in pyproject.toml for linting and type checking.
- Document local machine quirks in CLAUDE.md (Postgres on port 8080,
SSLKEYLOGFILE breaking litellm/pyright via OPENSSL_Uplink crashes).
- Add backend/run_dev.ps1 dev launcher and docs/discord-bot.md.
